/**
 * 访问test数据库
 */
const mysql = require('mysql');
const pool = mysql.createPool({
    connectionLimit: 10,
    host:"127.0.0.1",
    user:"root",
    password:"747602469",
    database:"test",
});

/**
 * 获取sql执行结果
 * @returns {Promise}
 */
function query(sql,values){
    return new Promise((resolve,reject)=>{
        //连接池中获取连接
        pool.getConnection((error,connection)=>{
            if(error){
                reject(error);
            }else{
                //执行sql语句
                connection.query(sql,values,(error,results)=>{
                    //释放连接
                    connection.release();
                    if(error){
                        reject(error);
                    }else{
                        resolve(results);
                    }
                });
            }
        });
    });
}

module.exports = {query};